On Exxor, there is no poverty or violence, people rarely commit crimes unless extremely bored. The planet has conquered every social problem imaginable, but the food is pretty bland, mostly protein globules. Zan compares it to Sweden.
Exxorians are a pretty quiet, modest and sensible people, unless there's a thunderstorm. Whenever there's a thunderstorm, Exxorian adults will drop whatever they're doing and start tearing off their clothes. Driven mad with thunder lust, Exxorians writhe together, bonded into a single rhythm with the night. Men become women, women become animals and the night throbs with their pleasure. That behavior is not restricted only to the planet Exxor. Zan experienced his first thunderlust right here on Earth, which means, in the Exxorian culture, that Zan became a man.